Caster for amphibious use



FIG. 1 is a front elevation view of a caster for amphibious use showing my new design;

FIG. 2 is a side elevation view thereof, the opposite side being a mirror image of the side shown;

FIG. 3 is a top view thereof; and

FIG. 4 is a bottom view thereof. 

The ornamental design for a caster for amphibious use, as shown and described. 